W78C32C
8-BIT MICROCONTROLLER
GENERAL DESCRIPTION
The W78C32C microcontroller supplies a wider frequency range than most 8-bit microcontrollers on
the market. It is compatible with the industry standard 80C32 microcontroller series.
The W78C32C contains four 8-bit bidirectional parallel ports, three 16-bit timer/counters, and a serial
port. These peripherals are supported by a six-source, two-level interrupt capability. There are 256
bytes of RAM, and the device supports ROMless operation for application programs.
The W78C32C microcontroller has two power reduction modes, idle mode and power-down mode,
both of which are software selectable. The idle mode turns off the processor clock but allows for
continued peripheral operation. The power-down mode stops the crystal oscillator for minimum power
consumption. The external clock can be stopped at any time and in any state without affecting the
1.processor.
FEATURES
•
8-bit CMOS microcontroller
•
Fully static design
•
Low standby current at full supply voltage
•
DC-40 MHz operation
•
256 bytes of on-chip scratchpad RAM
•
ROMless operation
•
64K bytes program memory address space
•
64K bytes data memory address space
•
Four 8-bit bidirectional ports
•
Three 16-bit timer/counters
•
One full duplex serial port
•
Boolean processor
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Six-source, two-level interrupt capability
•
Built-in power management
•
Packages:
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DIP 40: W78C32C-24/40
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PLCC 44: W78C32CP-24/40
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QFP 44: W78C32CF-24/40
-1-
Publication Release Date: July 1999
Revision A2
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